Question

Стальная деталь массой 75 кг имеет объём 15 дм кубических . Определите, имеет ли она внутри полость. ​

Answer 1

Да деталь имеет полость

Answer 2

Determining if the Steel Detail has a Cavity

To determine if the steel detail with a mass of 75 kg and a volume of 15 dm³ has a cavity inside, we need to compare the given mass and volume values.

The density of an object can be calculated by dividing its mass by its volume. If the density is consistent with the density of solid steel, then the steel detail does not have a cavity. However, if the density is significantly lower than the density of solid steel, it suggests the presence of a cavity.

To calculate the density of the steel detail, we can use the formula:

Density = Mass / Volume

Given: - Mass = 75 kg - Volume = 15 dm³

Converting the volume from dm³ to m³: - 1 dm³ = 0.001 m³ - Volume = 15 dm³ * 0.001 m³/dm³ = 0.015 m³

Calculating the density: - Density = 75 kg / 0.015 m³ = 5000 kg/m³

Now, we need to compare the calculated density with the density of solid steel. According to available search results, the density of steel is approximately 7850 kg/m³.

Since the calculated density of the steel detail (5000 kg/m³) is significantly lower than the density of solid steel (7850 kg/m³), it suggests that the steel detail may have a cavity inside.

Please note that without additional information or measurements, it is not possible to determine the exact nature or size of the cavity inside the steel detail. Further investigation or examination would be required to provide a more accurate assessment.